Год выпуска: 2012 Автор: Assefa Kumsa Издательство: LAP Lambert Academic Publishing Страниц: 108 ISBN: 9783659121401
Описание
The causes of water pollution in a watershed are attributed to various sources. The sources of such pollutants and their routing mechanism are controlled by several natural and anthropogenic factors. Such natural and human-induced complexities make the protection of pollution and hence water resource management too difficult. Therefore, extensive knowledge and information is required not only about the pollutants in concern but also the controlling factors within the environment at varying spatial and temporal scales. Description of the spatial and temporal variability of processes based on conventional measurements or observations, for example field sampling and analysis of stream water quality, to represent and explain the entire watershed is ineffective, expensive and time consuming increasing the intricacy on effective decision-making process. An integrated spatial approach that combines a watershed scale hydrologic models, remote sensing and GIS led to tremendous progress...
